<template>
  <el-container class="home-contaniner">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <!-- <img src="../assets/Egame.png" alt=""> -->
        <span>EGame电商后台管理系统</span>
      </div>
      <el-button type="infor" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区 -->
          <el-menu
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409EFF"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            router
            :default-active="activePath">
            <!-- 一级菜单 -->
            <el-submenu :index="item.resourceId +''" v-for="item in menulist" :key="item.resourceId" >
              <!-- 一级菜单的模板区域 -->
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.resourceId]"></i>
                <!-- 文本 -->
                <span>{{item.resourceName}}</span>
              </template>
              <!-- 二级菜单 -->
              <el-menu-item :index="'/' + subItem.uri" v-for="subItem in item.children" :key="subItem.id"
              @click="saveNavState('/' + subItem.uri)">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.resourceName}}</span></el-menu-item>
            </el-submenu>
          </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
  export default {
    data() {
      return {
        //左侧菜单
        menulist: [],
        iconsObj: {
          '1': 'el-icon-s-custom',
          '3': 'el-icon-s-tools',
          '4': 'el-icon-s-goods',
          '5': 'el-icon-s-order',
          '6': 'el-icon-s-grid',
          '7': 'el-icon-s-flag',
          '8': 'el-icon-s-data',
          '9': 'el-icon-s-comment'
        },
        //绑定折叠
        isCollapse: false,
        //被激活的链接地址
        activePath: ''
      }
    },
    created() {
      this.getMenuList()
      this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout() {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      //获取所有的菜单
      async getMenuList() {
       const { data: res } = await this.$http.post('/api/resource/getResource')
       if (res.code !==200) return this.$message.error(res.msg)
       this.menulist = res.data
      },
      //点击按钮切换菜单的折叠与展开
      toggleCollapse() {
        this.isCollapse= !this.isCollapse
      },
      //保存链接的激活状态
      saveNavState(activePath) {
        window.sessionStorage.setItem('activePath', activePath)
        this.activePath = activePath
      }
    }
  }
</script>

<style lang="less" scoped>
.home-contaniner {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: 0px;
  }
}

.el-main {
  background-color: #eaedf1;
}

.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
